INDEX 



TO 



THE NAUTILUS, VOL. XXIIL 



INDEX TO SUBJECTS, GENERA AND SPECIES. 



Aeolidiella pupillosa 36 



Aldabra, the land mollusca of 69 



Alvania bakeri Bartsch, n. sp 137 



Amnicola crosseana Pils., n. sp. (PI. 9, fig. 6) 98 



Amnicolidae of the Panuco River system, Mexico 97 



Anodonta dakota Frierson, n. sp. (PI. 10) 113 



Astarte newtonensis Aldr., n. sp. (PI. 11, fig. 2, 3) 121 



Auriculella 122 



Bela blaneyi Bush, n. sp. fig. 1) 61 



Bela ineisula Verrill 62 



Bergh, Ludwig Rudolph Sophus (Obituary) 72 



Bermuda, a new land shell from 63 



Bermuda, a new Rissoa from. 65 



Bifidaria armifera Say, and its varieties 52 



Bifidaria armifera var. abbreviata Sterki, n. v 53 



Bifidaria armifera var. affinis Sterki, n. v 53 



Bifidaria armifera var. interpres Sterki, n. v 53 



Bifidaria armifera var. similis Sterki, n. v 53 



Binney, William G 60 



Britts, Dr. John H 120 



Bronx Borough, New York, fresh water fossils of 10 



California, Mollusca of San Bernardino County 73 



Carinifex sanctaeclarse Hannibal, n. sp. (fossil) 40 



(iii) 



